Process & Procedure

I initially made some sketches on paper before drawing a raster file with the pencil tool in Photoshop Elements 6 (it's aliased and should trace more cleanly). After making this preliminary drawing, I got some feedback from classmates and the instructor, which helped me decide to focus on using the branches as the key element in reading time rather than additional tick marks. I then realized that I needed to account more for the clock kit, from which the smaller center circle arose. I also decided that adding some grain to the front might be a nice detailing. After blocking out all of these shapes in Photoshop, I traced them in Illustrator and adjusted the resulting curves in Inkscape. The resulting SVG files were imported as sketches in Fusion360, where I actually had many problems with phantom lines appearing. I also realized that I needed to make sure my imported sketches were all positioned appropriately relative to each other, so I ended up adding an outer rectangle when exporting the SVG's  for each piece from Inkscape (DXF's with multiple layers lagged terribly) for positioning.

In Fusion360, I did some preliminary extrusions/renders, and made some test cuts on the 6mm plywood and 3mm black acrylic to try to determine the necessary hole size. Despite my measurements, the plywood cuts weren't fitting the spindle, so I ended up testing a few sizes before I found one which worked. Through this, I also realized that multiple layers would be too thick to fit properly on the spindle. Thus, I decided to adjust my clock to work on a single piece of 6mm plywood. Also having a piece 1' x 2' wood on hand, having the clock about 11" in diameter made it fit comfortably and look a reasonable size.

To flatten the clock, I merged the front and back piece by joining the extruded pieces in Fusion360 and cleaning the resulting projection a little in Inkscape. Since then all the branches would be on the same layer, I decided that having detailing on only the bottom half would look strange and also take a lot of time to engrave/score, so I removed it. I also decided to engrave/score the circle "backing" piece to distinguish it from the rest of the branches. To add all of the functions for the circle backing, I duplicated the outline of the various pieces for the backing in Inkscape and changed its color to add an engrave/scoring option. I also made sure to cut the inner pieces first before cutting the overall outline of the branches.

When I finally went to cut the piece, I first did some test cuts to determine a good speed/power for the scoring. The laser had some trouble cutting through some areas, but those mostly still popped out. However, there was a knot in the wood, so there was no nice way to fix the uncut portions of that. As such, I ended up needing to cut a second piece, which was then successful (except that the hole still ended up being slightly tight, so I needed to thread it along the spindle a bit).

Because my clock kit didn't have a loop with which to hang the clock, I ended up cutting a frame from 6mm clear acrylic to house the clock kit piece. Unfortunately, something was fogged with the laser, so it took many cuts before I successfully cut out two pieces. These pieces were then glued together so the would fit snugly around clock kit (this can be seen in the last picture).

From there, I finished assembling the clock kit/hands/adding batteries and hung it up on a hook in my room!